import math as mt
import sys, string
from collections import Counter, defaultdict
input = sys.stdin.readline

MOD = 1000000007

# input functions
I = lambda : int(input())
M = lambda : map(int, input().split())
Ms = lambda : map(str, input().split()) 
ARR = lambda: list(map(int, input().split()))


def main():
    n = I()
    n -= 400
    print(8 - n//200)

# testcases
tc = 1
for _ in range(tc):
    main() import math as mt math import sys, string sys string from collections import Counter, defaultdict input = sys.stdin.readline input sys.stdin.readline sys.stdin sys stdin readline MOD = 1000000007 MOD 1000000007 I = lambda : int(input()) I lambda : int(input()) int(input()) int input() input M = lambda : map(int, input().split()) M lambda : map(int, input().split()) map(int, input().split()) map int input().split() ().split () input split Ms = lambda : map(str, input().split()) Ms lambda : map(str, input().split()) map(str, input().split()) map str input().split() ().split () input split ARR = lambda: list(map(int, input().split())) ARR lambda: list(map(int, input().split())) list(map(int, input().split())) list map(int, input().split()) map int input().split() ().split () input split def main():
    n = I()
    n -= 400
    print(8 - n//200)

# testcases main n = I() n I() I n -= 400 n 400 print(8 - n//200) print 8 - n//200 8 n//200 n 200 tc = 1 tc 1 for _ in range(tc):
    main() _ range(tc) range tc main() main ARR = lambda: list(map(int, input().split())) lambda: list(map(int, input().split())) ARR I = lambda : int(input()) lambda : int(input()) I def main():
    n = I()
    n -= 400
    print(8 - n//200)

# testcases def main():
    n = I()
    n -= 400
    print(8 - n//200)

# testcases main M = lambda : map(int, input().split()) lambda : map(int, input().split()) M Ms = lambda : map(str, input().split()) lambda : map(str, input().split()) Ms tc = 1 1 tc input = sys.stdin.readline sys.stdin.readline input MOD = 1000000007 1000000007 MOD
import math as mt
import sys, string
from collections import Counter, defaultdict
input = sys.stdin.readline

MOD = 1000000007

# input functions
I = lambda : int(input())
M = lambda : map(int, input().split())
Ms = lambda : map(str, input().split()) 
ARR = lambda: list(map(int, input().split()))


def main():
    n = I()
    n -= 400
    print(8 - n//200)

# testcases
tc = 1
for _ in range(tc):
    main()